Reset DBID Reset database id so that it can be backed up if the same DBID already exists in RMAN catalog for a different database.
SVRMGR> alter database backup controlfile to trace resetlogs;
SVRMGR> shutdown immediate;
SVRMGR> startup mount;
SVRMGR> select dbid , name from v$database ;
DBID NAME
---------- ---------
673658548 ...
